BE447568A - - Google Patents
Info
- Publication number
- BE447568A BE447568A BE447568DA BE447568A BE 447568 A BE447568 A BE 447568A BE 447568D A BE447568D A BE 447568DA BE 447568 A BE447568 A BE 447568A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL103265A NL59317C (fr) | 1941-10-15 | 1941-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE447568A true BE447568A (fr) | 1942-11-30 |
Family
ID=19780546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE447568D BE447568A (fr) | 1941-10-15 | 1942-10-15 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2495580A (fr) |
| BE (1) | BE447568A (fr) |
| CH (1) | CH241098A (fr) |
| DE (1) | DE846739C (fr) |
| FR (1) | FR886755A (fr) |
| GB (1) | GB611933A (fr) |
| NL (1) | NL59317C (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563573A (en) * | 1951-08-07 | Hot cathode electron tube which re | ||
| GB721837A (en) * | 1951-01-11 | 1955-01-12 | Egyesuelt Izzolampa | Improvements in cathodes and method of making them |
| US3031740A (en) * | 1958-03-12 | 1962-05-01 | Eitel Mccullough Inc | Matrix type cathode |
| FR2215699B1 (fr) * | 1973-01-30 | 1976-04-30 | Commissariat Energie Atomique | |
| US4987342A (en) * | 1989-03-27 | 1991-01-22 | Gte Products Corporation | Self-ballasted glow discharge lamp having indirectly-heated cathode |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1618499A (en) * | 1923-11-06 | 1927-02-22 | Charles P White | Electrical apparatus |
| US2075876A (en) * | 1927-12-28 | 1937-04-06 | Electrons Inc | Cathode organization |
| US2107945A (en) * | 1934-11-20 | 1938-02-08 | Gen Electric | Cathode structure |
-
1941
- 1941-10-15 NL NL103265A patent/NL59317C/xx active
-
1942
- 1942-10-13 DE DEN2546D patent/DE846739C/de not_active Expired
- 1942-10-13 CH CH241098D patent/CH241098A/de unknown
- 1942-10-13 FR FR886755D patent/FR886755A/fr not_active Expired
- 1942-10-15 BE BE447568D patent/BE447568A/xx unknown
-
1946
- 1946-03-11 US US653691A patent/US2495580A/en not_active Expired - Lifetime
- 1946-03-27 GB GB9421/46A patent/GB611933A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH241098A (de) | 1946-02-15 |
| NL59317C (fr) | 1946-06-15 |
| FR886755A (fr) | 1943-10-25 |
| DE846739C (de) | 1952-08-18 |
| GB611933A (en) | 1948-11-05 |
| US2495580A (en) | 1950-01-24 |